Product description

The Chuck Cylinder Assembly (EAA0338G70A / 4030040) is a critical pneumatic component for the turntable clamping system on Snap-On and John Bean tire changers. This cylinder powers the clamping jaws that grip the wheel rim from either the internal or external circumference, providing the high-pressure hold necessary for stable rotation and bead manipulation. Manufactured with high-grade aluminum or steel barrels and professional-grade seals, this cylinder is built to withstand millions of cycles in a busy automotive repair environment. A failing chuck cylinder can lead to insufficient clamping force or slow jaw response; replacing it with this genuine-quality assembly restores the gripping power and reliability required for safe and efficient tire service operations.

Product highlights

• Clamping Power: Provides heavy-duty pneumatic force for rim gripping
• Reliability: Designed for high-cycle use in professional tire shops
• Seal Quality: Includes premium seals to prevent air leaks and pressure drop
• Versatility: Fits a wide range of Snap-On and John Bean turntable models

Specs

Manufacturer Part Number: eaa0338g70a
Manufacturer: Snap-On
Country of Manufacture: USA

Direct replacement models

Snap-On: eaa0338g70a, 4030040
Fits Models: Snap-On and John Bean Tire Changers

You will receive the same product or an OEM-Equivalent that meets the highest standard of the OEM with warranty that will be a direct-fit. Manufactured with rigorous industry standards and certified in the USA with superior quality to the OEM.